New Movies: ‘Jack the Giant Slayer,’ ’21 and Over,’ ‘The Last Exorcism Part II,’ ‘Phantom’

This week we have four new releases, covering four different genres and targeting four different audiences: fairy-tale action epic, a coming-of-age (21) comedy, supernatural horror, and a submarine thriller.

'Jack the Giant Slayer'

When Jack accidentally opens a portal and lets in a race of giants bent on destruction, he must lead humanity's fight against their monstrous new foes. (This can also be seen in 3-D and IMAX.)